<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>字符串</title>
    <script>
        let str = "今天天气终于放晴";

        console.log(str.includes("天气"))
        console.log(str.endsWith("放晴了"))
        console.log(str.startsWith("昨天"))

        let tmp = `时间发货速度肌肤健康asf
        sasadasd
        阿萨德撒


        撒的


        阿萨斯的`;

        console.log(tmp);



    </script>
</head>
<body>

</body>
</html>